/*
 * Kiwix Android
 * Copyright (c) 2019 Kiwix <android.kiwix.org>
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */

package org.kiwix.kiwixmobile.core.downloader.model

import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.util.Base64
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.graphics.asImageBitmap
import androidx.compose.ui.graphics.painter.BitmapPainter
import androidx.compose.ui.graphics.painter.Painter
import androidx.compose.ui.res.painterResource
import org.kiwix.kiwixmobile.core.R

@JvmInline
value class Base64String(private val encodedString: String?) {
  fun toBitmap(): Bitmap? = try {
    encodedString?.let { nonNullString ->
      Base64.decode(nonNullString, Base64.DEFAULT)
        .let {
          BitmapFactory.decodeByteArray(it, 0, it.size)
        }
    }
  } catch (_: IllegalArgumentException) {
    null
  }
}

@Composable
fun Base64String.toPainter(): Painter {
  val bitmap = remember(this) { toBitmap() }
  return if (bitmap != null) {
    BitmapPainter(bitmap.asImageBitmap())
  } else {
    painterResource(id = R.drawable.default_zim_file_icon)
  }
}
